Solar-powered Theremin in an Altoids tin
There comes a day in every gadget-fiend's life where he or she realizes that they do not own a solar-powered theremin. Remediation of this lack involves the 1381 Solar Engine, a custom-made PCB, and the supplied full-color instructions. Oh, and an Altoids tin.
The result is the perfectly irritating Heliophone, which sounds like a bee whose wingbeats-per-second rate is under the tight control of a neurotransmitter drip.
Product Page [Clockwork Robot via Make]

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I would throttle the neck of the person playing this for longer than 5 seconds.
This would be a lot cooler if it sounded anything like a Theremin, instead of a Vespa. The only thing that should sound like a Vespa is a Vespa. Also, it doesn't really appear to work like a Theremin - he shouldn't really be touching it, but moving around outside it. Looks nice, though!
@2 ... to play a theremin, you do not touch it ... you only bring your hands/fingers close to it.
so, as part of my stage act I could build a theremin into a dressmaker's dummy and play it by air-humping it?
...pics or it didn't happen